I recently purchased a Limar 777 road helmet (I hate visors). It weighs 230 g and has 24 vents. It is beautifully comfortable on my head, so much so that on occasion I have forgotten to take it off. The adjustment system is superb and can be fine tuned. RRP is $130 but most shops have them for around $90. If you are riding XC put it on your short list. Oh, by the way, Limar have a 2 year warranty and a 3 year crash replacement program (50% off the cost of a replacement).